Machine for molding cement blocks.



.No. 884,713. PATENTED APR. 14, 1908.

F. GHBRNY. MACHINE FOR MOLDING CEMENT BLOCKS.

APPLICATION I LED D 1 1 E0 3 2SHEETS-SHEET 1.

sum:

Tn: NORRIS F5 rsRs No. 884,713. F. OHERNY.

MACHINE FOR MOLDING CEMENT BLOCKS.-

APPLIOATION FILED DEOJ3. 1907.

V 2 SHEETS-SHEET 2.

PATENTED APR. 14, 1908.-

FRANK OHERNY, OF CLEVELAND, OHIO.

MACHINE FOR MOLDING CEMENT BLOCKS.

Specification of Letters Patent.

Application filed December 3, 1907.

Patented April 14, 1908.

Serial No. 404,962.

To all whom it may concern:

Be it known that I, FRANK CHERNY, citizen of the United States, residing at Oleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Molding Cement Blocks, of which the following is a specification.

This invention is a machine for molding cement and similar blocks, and has for its object to provide an improved machine of the kind, having separable sides, and a s ecial feature of which is the manner in whic and the means by which said sides are separated to release the block.

A further feature of the invention is the ability of the machine to make blocks of different sizes or shapes. I

The machine also includes the means for raising and lowering a core, into and out of the mold, for the purpose of making the blocks hollow.

A machine embodying the invention is illustrated in the accompanying drawings, in which Figure 1 is a front elevation thereof, parts being broken away. Fig. 2 is a side elevation. Fig. 3 is a top plan view. Fig. 4 is a plan view of a plate which moves up and down to operate the openable sides. Fig. 5 is a detail in perspective showing how said sides are opened. Figs. 6 and 7 are plans of different forms of base plates. Fig. 8 shows a removable piece for use in connection with the plate shown in Fig. 7.

Referring more specifically to the drawings, 1 indicates the side plates or frames of the machine, held together by a base plate and adapted to support the mold parts. The sides of the mold box are indicated at 2 and are divided or separable at the middle of each side to form four corner pieces or parts which are hinged together at the corners as indicated at 2. It would seem that the mold walls are hinged together at the corners and separate at the middle of the walls, instead of coming apart at the corners, as heretofore.

When the box is closed the wall sections are held together by latches 14 which are pivoted to one section and engage a proper keeper or hook 14 on the other section. There are four of these latches located at the four points of separation. The base plate of the box or mold is indicated at 5, and it is mounted upon the side frames 1 and has slots and openings therein to allow the division lates 3 and cores 4 to be raised and lowered t ierethrough.

In Fig. 3 the mold is shown divided to form two blocks, in Fig. 6 to form three blocks, and in Fig. 7 to form four blocks. Obviously the number "and shape may be varied as desired, appropriate changes being made in the plates and the cores. In Fig. 8 a piece is vshown which is inserted in the space 3" of Fig. 7, between the ends of the division plates 3. The purpose of this is to avoid cutting entirely across the base plate, which might weaken the same so that it would sag at the middle.

The division plates 3 and cores 4 are mounted or rest upon a lower plate 6 which is movable up and down under the base plate 5 and is guided by lugs 6 which travel in vertical slots 1 in the side frames 1. The plate 6 is moved up and down by means of a crank shaft 8 having a crank 8 at the middle which is connected by a link 9 to lugs 10 on the under side of the plate 6. The crank shaft is or may be operated by treadles 8* connected to cranks at the outer ends of the shaft. Or other means of operating the crank shaft may be substituted.

The side sections 2 are each connected to and carried at the upper end of an arm 7, which arms are arranged in pairs at the corners of the machine, each pair of arms 7 carrying the respective pairs of corner pieces 2. Each pair of these arms is loosely hinged at its lower end, at 7 to a bent plate or suporting bracket 11 which rests upon and is fastened to the base plate of the machine,

and the upper ends of the arms are rounded as at 7 to turn in brackets 7 fixed to the sides 2 near the lower edges thereof, the con struction being such that the arms 7 can be swung in or out, to either close or separate the side pieces of the box. This operation is effected by means of the plate 6 which has pivoted arms 6 slidable up and down in grooves 7 in the arms 7, said arms extending outwardly from the corners of the plate 6 to fit in said grooves.

In operation, the sliding plate 6 is raised and-the corner ieces brought together and fastened by the atches 14, the dividing plates and cores being at the same time raised into the mold through the openings in the plate 5. The box is then filled with cement and allowed to set, and then the mold is removed therefrom by turning the crank. This lowers the plate 6 and as it is lowered it presses the arms 7 outwardly so that the corner parts 2 are swung out away from the block, as illus trated in Fig. 5, the latches 14 being, of course, first released. The same action withdraws the division plates and cores-4 through the base 5 of the box, leaving the completed block or blocks on the base plate, from which they may be removed for the next operation.

I claim:

1. The combination of a mold having side walls formed in sections hinged together at the corners of the mold, and means to swing the various corner sections toward or from each other, to close or open the mold.

2. The combination of a mold having side walls each of which consists of two separable sections, the sections of one wall being hinged at the corners of themold to the sections of the adjoining walls, and means to move the airs of sections so hinged toward or from each other, to close or open the mold.

3. The combination of a mold having separable side walls and a base plate, a frame under the base plate, arms hinged at their lower ends to the frame and connected at their upper ends to the side walls to support the same, a plate movable up and down in the frame and having projections connected to the arms to swing the same in or out, and means to raise or lower the plate.

4. The combination of a mold having separable corner sections each of which includes parts of two adjoining side walls, a base plate and a frame thereunder, arms hinged to the frame and supporting said corner sections and arranged to swing in or out to close or open the walls of the mold, and means to operate said arms.

5. The combination of a mold having separable corner sections each of which comprises parts of two adjoining side walls hinged together at the corner, a base plate and a frame thereunder, a pair of arms at each corner hinged at their lower ends to the frame and connected at their upper ends to said parts,

and arranged to swing out or in to 0 en or close the mold, a plate slidable up anc down in the frame and between said pairs of arms and having projections connected thereto, means to raise or lower the late.

6. The combination of a frame having vertical guides, a bottom plate at the top of the frame, forming the bottom of the mold, and having openings therein through which cores may be advanced or retracted, a plate movable up and down in said guides under said bottom plate and adapted to support cores, separable'sides fitting the bottom plate, arms hinged to the frame and connected to said sides to support the same and arranged to swing in or out to close or 0 en said sides, and means to raise or lower sai plate.

In testimony whereof I affiX my signature, in presence of two witnesses.

FRANK CHERNY.

Witnesses:

MONROE E. MILLER, JoHN A. BOMMHARD'I. 

